I enjoyed this film very much. I was in the Army and in West Berlin as a German translator from January, 1962 to March, 1964. If this subject interests you, watch "The Wall" on this excellent site at:
I recognized many of the locations shown in "Half City". The overall effect of watching these two films present West Berlin as bleak and depressing. That was less than half of the story.
Physically cut off from the rest of the world, West Berlin managed to maintain a very high standard of living. I have fond memories of the movies, plays and operas that I saw there. The people were energetic and, even though separated from family and friends in the eastern sector, managed to keep their spirits up.
A wall shown in the film has the words "Wahrheit bring, was Andere verschweigt". This can be loosely translated as "Truth reveals what anything less denies".